CDLL5268A

The CDLL5268A is a single Zener diode often used in a variety of different applications such as power supplies, battery protection devices, overvoltage protection, general circuit protection and voltage regulation.

CDLL5268A zeners offer a wide range of operating temperature ranges and low reverse leakage current. Their maximum power dissipation ranges up to 500mW with 5% tolerance and with Vz available from 6.2V up to 200V. The reverse breakdown voltage, also known as the Zener voltage, is the voltage at which the diode begins to conduct in the reverse direction. It is normally set at the specified “Zener voltage” by the design engineer.

As a protection device, the Zener diode is connected in reverse bias, which means that the cathode (negative) of the diode is connected to the positive voltage rail of the system, while the anode (positive) of the diode is connected to the negative voltage rail. When the input voltage exceeds the specified breakdown voltage of the diode, it starts conducting current and will limit voltage rises and protect the system.

The CDLL5268A Zener diode has a wide range of applications, including regulating AC or DC power supplies, providing protection against overvoltage conditions, battery protection devices, and in the general circuit protection and voltage regulation of other circuits.

The working principle behind the CDLL5268A Zener diode is relatively simple. It relies upon the technology known as the junction breakdown phenomenon. At low input voltages, the diode behaves like a standard diode, with no current passing through it in either direction. When the input voltage rises to a particular point, it reaches the breakdown voltage, at which point current starts to flow in the reverse direction.

The conductor material of the diode creates an electric field, known as the \'reverse bias voltage\', which causes the electrons in the material to accelerate. Once the reverse bias voltage reaches its maximum level, it breaks down the material\'s high resistive area and creates a short circuit, allowing current to pass through.

Once an input voltage reaches beyond the breakdown voltage of the device, it will continue to pass because of the short circuit that has been created. This short circuit also creates a voltage drop across the diode at all times, which is known as the Zener voltage, or breakdown voltage.

This Zener voltage acts to regulate the input voltage, preventing it from rising above a predetermined level. The breakdown voltage of the diode can be adjusted to the desired level by options such as temperature, reverse current, change in material characteristics, and the amount of excess current.

The CDLL5268A Zener diode is an effective low power protection device for a wide range of applications. It works on the junction breakdown principle to protect sensitive circuits and devices against overvoltage conditions. It also offers low power dissipation, wide range of operating temperature and low leakage current, making it an ideal choice for voltage regulation.

In summary, the CDLL5268A is a single Zener diode with a wide range of applications, including power supplies, battery protection devices, overvoltage protection, general circuit protection and voltage regulation. It is based on the junction breakdown principle and works by creating a short circuit at a predetermined voltage, allowing it to regulate the input voltage and protect sensitive circuits and devices against overvoltage conditions.